You are unclear. What do you mean by 'normal' keyboard? What is an abnormal keyboard? Do you mean where are they on the keyboard? This depends on the emulator in use. Do you mean what is their function? This depends on the application having control of the keyboard at the time. Have you tried lookin up PA1/2 or 3 in the manual for the software you are using?
The problem I have is that people can explain things quickly but I can only comprehend slowly.